Updated Blaster Not Working
I recently had to update from a Windows XP computer to a Windows 10 computer. I was using a ByteBlaster II through the parallel port, but since the Windows 10 Machines don't use parallel ports, I upgraded to a USB Blaster II. The drivers installed fine, and the computer recognizes the JTAG controller, but the Quartus II software no longer recognizes any devices. I know the devices are good because it was working on the Windows XP machine, but the software in Windows 10 will not see any devices.
What do I do?
The cause of the problem was found. It was the frequency of the USB Blaster.
The Quartus II software comes with drivers for the USB Blaster, but does not allow for changing the communication speed of the Blaster.
The Quartus Prime software does. The default value of the speed is 24 MHz, and the devices we were trying to program worked at a lower frequency. Once we changed the frequency of the USB Blaster to match the devices, it worked fine.